Cutting edge of endoscopic full-thickness resection for gastric tumor

Figure 5 Procedures of non-exposed endoscopic wall-inversion surgery. A: Protruding submucosal lesion is seen at the greater curvature of the middle gastric body; B: Circumferential seromuscular incision is made outside the serosal markings after endoscopic submucosal injection; C: Lesion is inverted with a surgical sponge used as a spacer; D: Massive protrusion of the inverted tissue; E: Surgical sponge as a spacer and a suturing line during endoscopic mucosal incision; F: Mucosal clipping after the resection; G: Resected specimen: Mucosal side; H: Resected specimen: Serosal side.